Dong, H;
Jacques, SDM;
Kockelmann, W;
Price, SWT;
Emberson, R;
Matras, D;
Odarchenko, Y;
... Vamvakeros, A; + view all
(2023)
A scalable neural network architecture for self-supervised tomographic image reconstruction.
Digital Discovery
, 2
(4)
pp. 967-980.
10.1039/d2dd00105e.
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Abstract
We present a lightweight and scalable artificial neural network architecture which is used to reconstruct a tomographic image from a given sinogram. A self-supervised learning approach is used where the network iteratively generates an image that is then converted into a sinogram using the Radon transform; this new sinogram is then compared with the sinogram from the experimental dataset using a combined mean absolute error and structural similarity index measure loss function to update the weights of the network accordingly. We demonstrate that the network is able to reconstruct images that are larger than 1024 × 1024. Furthermore, it is shown that the new network is able to reconstruct images of higher quality than conventional reconstruction algorithms, such as the filtered back projection and iterative algorithms (SART, SIRT, CGLS), when sinograms with angular undersampling are used. The network is tested with simulated data as well as experimental synchrotron X-ray micro-tomography and X-ray diffraction computed tomography data.
| Type: | Article |
|---|---|
| Title: | A scalable neural network architecture for self-supervised tomographic image reconstruction |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/d2dd00105e |
| Publisher version: | https://doi.org/10.1039/d2dd00105e |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10177072 |
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